中小学学生习得性无助的形成、表现及其治疗

学生的学业不良、社交困难,一直是教育界和心理界关注的热点,而习得性无助正是这类学生的一种普遍倾向。探讨习得性无助的形成、表现及其治疗,有利于教师理解习得性无助学生,从而帮助其克服这种障碍。     

Towards precision medicine: from quantitative imaging to radiomics

Radiology (imaging) and imaging-guided interventions, which provide multi-parametric morphologic and functional information, are playing an increasingly significant role in precision medicine. Radiologists are trained to understand the imaging phenotypes, transcribe those observations (phenotypes) to correlate with underlying diseases and to characterize the images. However, in order to understand and characterize the molecular phenotype (to obtain genomic information) of solid heterogeneous tumours, the advanced sequencing of those tissues using biopsy is required. Thus, radiologists image the tissues from various views and angles in order to have the complete image phenotypes, thereby acquiring a huge amount of data. Deriving meaningful details from all these radiological data becomes challenging and raises the big data issues. Therefore, interest in the application of radiomics has been growing in recent years as it has the potential to provide significant interpretive and predictive information for decision support. Radiomics is a combination of conventional computer-aided diagnosis, deep learning methods, and human skills, and thus can be used for quantitative characterization of tumour phenotypes. This paper discusses the overview of radiomics workflow, the results of various radiomics-based studies conducted using various radiological images such as computed tomography (CT), magnetic resonance imaging (MRI), and positron-emission tomography (PET), the challenges we are facing, and the potential contribution of radiomics towards precision medicine.     

西方知识观的转变及其对当前课程改革的启示

知识是课程发展的三个重要来源之一.当代西方知识观经历着以下的转变:知识的本质从绝对真理性到生成建构性,知识的存在状态从公众知识到个体知识,知识的属性从价值中立到价值关涉,知识的种类由分层到分类,知识的范围从普适性到情境性.由此对当前课程改革具有重要的启发:课程目标应转向对学生生存与发展的关注,课程内容应更多关注学生的精神成长,课程实施应采取自下而上的实践范式,教学过程中应更多激发学生的自主学习.     

非英语专业英语口语教学

随着交际教学法的引入和对英语交际能力培养的重视,口语教学的重要性已逐渐得到大家的共识。本文首先对我国大学非英语专业英语口语教学的现状进行了分析,然后提出若干加强非英语专业英语口语教学的建议。     

多体回路系统的正则运动方程

采用绝对坐标定义系统中各刚体的位置，刚体间的运动副及作用在刚体上或刚体间的力，给出了求速度变换矩阵的一般方法．经过约束方程的雅可比矩阵的零空间，用相对坐标建立了多体回路系统的运动微分方程，并进而表示成正则运动方程的形式．     

杨佴旻的新画风

刚刚过去的一个世纪，被一些学者称为人类历史上变化最大的世纪。他们所谓的变化，包括人类生活的各个方面，从地球环境、科学技术、政治制度到普通人的生活方式，无不经历了惊人的巨变。     

Information privacy concerns and demographic characteristics: Data from a Korean media panel survey

This study explores the relationship between individuals' demographic characteristics and information privacy concerns (IPC) using panel data from the Korea Information Society Development Institute (KISDI) that has collected a large sample from 7809 respondents. Its goal is to address the gaps in existing information privacy literature that focuses mainly on behavioral determinants of IPC and thus has not paid much attention to the direct examination of the relationship between demographic characteristics of individuals and IPC. A few relevant studies that focus on such a relationship have produced inconsistent results. In our study, we found that while the effects of educational attainment, income level, and marriage are in line with existing studies, the effects of gender and age are at odds with existing studies. The main contribution of this study is to confirm the results of previous studies with a large sample and enables the generalization of empirical findings. In addition, the results that are in contrast to the literature can generate new research avenue.     

Chinese Landscape Painting in Blue and Green Colors

Blue and green are natural colors and favored by ancient Chinese painters. Landscape painting in blue and green coors represents an important genre of Chinese Ink painting. Based on mineral pigments of blue and green, this painting genre primarily depicts motifs like valleys, hills, forests and springs. Painters first outline contours of depicted subjects with ink of various thickness and then paint mountain rocks with light ruby as the background. The finely grinded mineral pigment of green is applied to the painted subjects and after it dries,